Claude Code keeps building sites that all look the same: the same labels, the same rounded cards and the same terracotta accent. Anthropic's own frontend-design skill lists these as tells of AI-generated design. This video shows why it happens and how to fix it. You'll see the free libraries and skills I use to make Claude Code apps look designed. They cover shadcn/ui, Base UI and Radix as the foundation, Sonner, the shadcn Command menu and NumberFlow for specifics, and Magic UI, Aceternity UI and 21st.dev for effects. You'll also get the 3 steps to make Claude actually use them: name the library, install it, and put it in CLAUDE.md. It ends with the free Hallmark design skill and 3 honest caveats.